gcse.c (compute_transp, [...]): Use MEM_READONLY_P.

2005-06-01 Mostafa Hagog <mustafa@il.ibm.com>

      * gcse.c (compute_transp, load_killed_in_block): Use MEM_READONLY_P.

From-SVN: r100425

gcc/ChangeLog

+2005-06-01 Mostafa Hagog <mustafa@il.ibm.com>
+
+	* gcse.c (compute_transp, load_killed_in_block): Use 
+	MEM_READONLY_P.
+
 2005-06-01  David.Billinghurst  <David.Billinghurst@riotinto.com>
 
 	PR target/21854

gcc/gcse.c

@@ -1370,6 +1370,11 @@ static int
 load_killed_in_block_p (basic_block bb, int uid_limit, rtx x, int avail_p)
 {
   rtx list_entry = modify_mem_list[bb->index];
+
+  /* If this is a readonly then we aren't going to be changing it.  */
+  if (MEM_READONLY_P (x))
+    return 0;
+
   while (list_entry)
     {
       rtx setter;
@@ -2462,6 +2467,7 @@ compute_transp (rtx x, int indx, sbitmap *bmap, int set_p)
       return;
 
     case MEM:
+      if (! MEM_READONLY_P (x))
 	{
 	  bitmap_iterator bi;
 	  unsigned bb_index;
@@ -2478,7 +2484,8 @@ compute_transp (rtx x, int indx, sbitmap *bmap, int set_p)
 
 	    /* Now iterate over the blocks which have memory modifications
 	       but which do not have any calls.  */
-	EXECUTE_IF_AND_COMPL_IN_BITMAP (modify_mem_list_set, blocks_with_calls,
+	    EXECUTE_IF_AND_COMPL_IN_BITMAP (modify_mem_list_set, 
+					    blocks_with_calls,
 					    0, bb_index, bi)
 	      {
 		rtx list_entry = canon_modify_mem_list[bb_index];